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9.3

php 5.0 script performance question

Asked by jmoriarty in PHP and Databases, MySQL Server, PHP for Windows

Hey folks,

I have a very basic script written in php 5.0 connecting to a mysql database that parses a csv of 3 fields to update entries in the database, and the script takes a significant amount of time to execute and I'm trying to figure out why. For example, a sheet of 600 records takes almost 5 minutes. I've attached the part of the code that parses the csv incase anyone can catch a reason why it might be bottlenecking somewhere.

Comments/help appreciate.

Thanks!

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             (note: I didn't include the file upload part, opening/closing tags, database connection info and so forth, since all that logic seems to function properly.
 
//set row count
$row = 0;
 
//loop through each row and assign elements to named variables
while ((list($sku, $price, $msrp) = fgetcsv($fh, ",")) !== FALSE) 
{
		$row++;
		//skip headers
     if ($row == 1) {
         continue;
     }
 
// in the database, sku is a varchar field, price/msrp are decimal(5,2)
 
$sku = "'" . mysql_real_escape_string($sku) . "'"; 
$msrp = mysql_real_escape_string($msrp); 
$price = mysql_real_escape_string($price);
 
//verify the sku column actually contains data
 
if ($sku == '')
{
exit("empty sku found");
}
 
//verify price has a value to update; script can update price, msrp, or both
 
if ($price != '')
{
$sql = "UPDATE mmproductgroupdetail mmp SET mmp.price = $price WHERE mmp.sku = $sku";
mysql_query($sql) or die('SQL ERROR:'.mysql_error());
 
}
//verify msrp has a value to update
 
if ($msrp != '')
{
$sql = "UPDATE mmproductgroupdetail mmp SET mmp.msrp = $msrp WHERE mmp.sku = $sku";
mysql_query($sql) or die('SQL ERROR:'.mysql_error());
}
 
//reset script execution time so it doesn't timeout due to long execution
 
set_time_limit(20);
}
//clean up
 
fclose($fh);
unlink($file);
mysql_close($conn);

           
         

20091021-EE-VQP-81 - Hierarchy / EE_QW_3_20080625

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php 5.0 script performance question

Asked by jmoriarty in PHP and Databases, MySQL Server, PHP for Windows

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